Side and center bearing for car-trucks.



No. 707,208. Patented Aug. l9, I902.

, E. cum SIDE AND CENTER BEARING FOB GAB TRUCKS.

(Application am .m a, 1902.

(N0 Model.)

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-- I-ATTORNEY UNITED STATES PATENT I ()FFICE.

EDWARD CLIFF, OF NEWARK, NEW JERSEY, ASSIGNOR TO VOSE AND CLIFFMANUFACTURING COMPANY, OF NEW YORK, N. Y., A CORPORATION OF NEW YORK. I

SIDE AND- CENTER BEARING FOR-CAR-TRUCKS.

SPECIFICATION forming part of Letters Patent No, 707,208, dated August19, 1902. 7

Application filed my 2, 1902.. SerialNo. 114.038. (Nb model.)

To all whom it may concern.-

Be it known that I, EDWARD CLIF a citizen of the United States, andaresident of Newark, in the county of Essex and State of New Jersey, haveinvented certain new and'useful Improvements in Side and Center Bearingsfor Car 'lrucks, of which the following is a specification.

The invention relates to improvements in side and center bearingsforcar-trucks; and

it consists in the novel features and combinations of parts hereinafterdescribe'd,and particularly pointed out in the claims.

My said bearing comprises an-upper memher, a lower member, and a pair ofconnected rollers confinedbetweentrack-sections formed on the facingsides of said upper and lower members, said track-sections presentingoppositely-inclined but otherwise correspond- 2o ing surfaces at eachside of the transverse center of the bearing and said rollers being oneat each side of said center and confined between saidoppositely-inclined surfaces, so that upon the movement of one of saidmemhere upon said rollers there may be no appreciable separation of saidmembers in adirection from each other; The aforesaid rollers areconnected together, so that theirrelation to each other and to saidoppositelyinclined track-surfaces may be preserved.

My side bearing may be employed between the ends of the truck and bodybolsters or between the ends of a truck-bolster;and-its end supportswhen the truck-bolster is mount- 3 5 ed to have a limited movementtransversely,

of the truck under the thrusts of the carbody,these being the usualpositions for rollerbearings. When the bearing is to" be employedbetween -the.ends of the truck and body bolsters, it will preferably begiven a curved outline on the arc of a circle whose center is the usualking pin or bolt, and when the bearing is to be used" below the endsofthe truck-bolster it will be of straight form and arranged in linewith said bolster, the

rollers being transverse of said bolster, the

said curved and straight side bearings being customary forms in thisart.

The invention will be fully understood from the detailed descriptionhereinafter presented, reference being had to the accompanying drawings,in ,which Figure l is'a side elevation of a side hearing constructed inaccordance with and embodying the invention, the dotted lines show- 5 5ing the position of theparts thereof after the upper member has beenmoved in one direction. Fig.2 is a top view of same-with the uppermember of the bearingomitted. Fig.

3 is a vertical-transverse section of same on the dotted line 3'3.ofFig; 1'. .Fig. 4: is a detached vertical transverse; section through theroller-frame on the dotted line 4 4 of 'Fig. 2, and Fig. 5 is an outlinediagram illustrative'of a modification of the facing'surfaces of theupper and lower members of the bearing.

-In the drawings, 10 and ll, respectively, denote'theupper and lower)members of the bearing, and=12 12 the rollers interposed between saidmembers and disposed at opposite 7o sides of the verticaltransversecenter thereof. The upper and lower members 10 11 are each in oneintegral piece, and said members correspond exactly with each otherexcept as to their position, the. upper member facing downward and thelower member facing up: ward, and each of said members comprises a basesection 13 and a track-section 14, the.

said base-sections affording means, as the cars 15, for rigidly securingthe memborSirifSo position, andf'the' track sections 14:; furnishing thebearing-surfaces for thei'rollersi 12, I said surfaces each beingsubdividedintotwo j sections 16 17, respectively, which meet at'thevertic'al transverse center of the tracksection 14 and thencecorrespondingly incline in opposite directions from ea ch ;othe,r, as

shown. At the ends 'of the track-section 14 of each bearing member 10and'l]v are. tl'1'e guards 18 to prevent under allordinary co'n-' 9oditions the escape of either of the ro1lers12 from between the bearingmembers.

' The rollers l2 12 are arranged torotate, but are tied together andmaintained at all times at a predetermined distance from each 5 other bymeans of a roller-frame comprising the sides 19 20, the short pins oraxles 21 at the ends of said sides and entering the bore of said rollers12, and the transverse arms 22, which are fastened together by bolts orscrews 23 and serve to connect said sides 19 20 together. One of thearms 22 is integral with the side 19 and the other with the side 20, andsaid arms 22 when the sides 19 20 are brought into proper relation toeach other will come one upon the other, as shown in Fig. 4, in whichposition they may be securely fastened together by the screws or bolts23 to maintain the integrity of the roller-frame. The pins or axles 21are integral with the sides 19 20, and they freely enter the bores ofthe rollers 12 and permit of the free rotation of said rollers.

The rollers 12 12 have heads or flanges 24: at their ends to extend uponthe opposite vertical sides of the track-sections l4, and said rollers12 12 intermediate said heads or flanges 24 are preferably concaved ontheir periphery to conform to the surfaces in cross-section of the saidtrack-sections, the latterin crosssection preferably presenting convexsurfaces.

When the parts of the side hearing are assembled into operative relationwith respect to each other, the facingsu rfaces of the tracksections 14are at opposite sides of the transverse center of the bearing oppositelyinclined, as shown; but otherwise they correspond with each other, thesurfaces 16 16 at one side of said center diverging on correspondinglines toward one end of the bearing and the surfaces 17 17 at the otherside of said center diverging on corresponding lines toward the otherend of said bearing. The roller-frame normally occupies a centralposition with respect to the side bearing and locates one of the rollers12 between the oppositely-inclined surfaces 16 16 and the other roller12 between the oppositely-inclined surfaces 17 17, and by preferenceeach of said rollers will be normally disposed at about midway of thelength of the surfaces'between which they perform their duty.

In the employment of the side bearing the upper member 10 thereof willfrom time to time be forced to travel upon and with the rollers 12 in adirection lengthwise of the lower member 11, and during such movement ofsaid upper member it will ride upon the said rollers 12 and said rollerswill ride upon said lower member 11; but owing to the rollerframe saidrollers 12 Will never leave the respective surfaces 16 16 and 17 17,between which they are initially confined. During the travel of theupper member 10 toward the right, looking at Fig. 1, one roller 12 willmove up the inclined track-surface 16 of the lower member 11 and theother roller 12 will move down the inclined surface 17 of said lowermember, and at the same time the said upper member 10 will move theinverted apex of its track-surfaces toward the said roller riding downsaid surface 17 and from the said roller riding up said surface 16,Whereby there is maintained a uniform space intermediate thetrack-surfaces of the members 10 11 at vertical lines extending throughthe rollers 12, by reason whereof the said upper member 10 whiletraveling will remain on its horizontal plane and not be compelled tolift the load above it. During the travel of the upper member 10 towardthe left, looking at Fig. 1, one roller 12 will move down the surface 16of the lower member 11 and the other roller 12 will move up the surface17 of said lower member, and at the same time the said upper member willmove the inverted apex of its track-surfaces toward the said roller 12riding down said surface 16 and from said roller 12 riding up saidsurface 17, with the result of permitting the said upper member totravel on a horizontal plane.

It is to be observed that one roller 12 is always between theoppositely-inclined surfaces 16 16, and that the other roller 12 isalways between the oppositely-inclined surfaces 17 17, and that saidrollers are maintained in proper relation to each other and to saidsurfaces 16 17 by means of the roller-frame connecting them. The factthat the rollers 12 are connected by a frame and that the surfaces 16 16and 17 17 are oppositely inclined also enables said rollers to readilyreach their initial normal position between the members 1011 upon eachmovement of the upper member 10 from and back to its normal position.

In the construction presented in Fig. 1 the surfaces 16 16 and 17 17diverge respectively toward the ends of the side bearings; but all ofthe results above described may on like principles within'the scope ofmy invention be attained should said surfaces 16 16 and 17 17 be made toconverge respectively toward the ends of the bearing as shown in diagramin Fig. 5, the surfaces 16 16 and 17 17 in either instance beingrespectively oppositely and correspondingly inclined.

The invention is not in every instance limited to the fact that thesurfaces 16 16 and 17 17 are oppositely and equally or correspondinglyinclined; but I recommend that the said surfaces be not only oppositelybut equally inclined, since with such construction the upper member ofthe hearing may move on a horizontal line and not be compelled toelevate the load above it. In everyinstance the said surfaces 16 16 and17 17 will be oppositely inclined, because very great advantages may bederived from such construction, the disadvantage of not having the saidsurfaces equally as well as oppositely inclined being that the uppermember of the hearing will not under such condition remain on a truehorizontal line while traveling.

My invention is applicable also to center bearings for car-trucks, theupper and lower members of the bearing then being circular and havingtwo or more pairs of the oppositely-inclined surfaces 16 16 and 17 17and two or more pairs of the connected rollers for IIO said surfaces,one pair of said surfaces and one pair of said rollers'being at eachside of the center of the bearing.

What I claim as my invention, and desire to secure by LettersPatent,is-- I 1. The bearing comprising upper and lower members having at eachside of a vertical transverse line the oppositely-inclinedtracksurfaces,combined with the rollers located between said surfaces, and means forkeeping said rollersadefinite distance apart; substantially as setforth. 2. The bearing comprising upper and lower members having at eachside of a vertical transverse line the oppositely-inclinedtracksurfacesdiverging toward the outer .ends of the bearing, combined with therollers located between said surfaces, and means for keeping saidrollersa definite distance apart; substantially as set forth.

'3. 'The'bearing comprising upper and lower members having ateach sideof a vertical transverse line the oppositely-inclined tracksurfaces,combined with the rollers located between said surfaces and having theend flanges extending over the edges of said surcated between saidsurfaces, and the rollerr faces, and means for keeping said rollers adefinite distance apart; substantially as set forth. 7 p i 4. Thebearing comprising the upper and lower members having ateach side of avertical transverse line the oppositely-inclined track-surfaces,combined with the rollers 10- frame connecting said rollers and havingthe axles extending into the bores of said rollers; substantially as setforth.

5. The bearing comprising-upper and lower members havingat eachside of avertical I transverse line the oppositely and equally in- 40 clinedtrack-surfaces, combined with the rollers located between said surfaces,and means for keeping said rollers a definite dis tance apart;substantially as set forth.

Signed at New York, inthe county of New York and State of New York, this1st day of] July,A. D. 1902. I

EDWARD CLIFF.

Witnesses: Q

CHAS. O. GILL, ARTHUR MARION.

